#include <iostream>

const int ArSize = 8;

int sum_arr(int arr[], int n);

int main(...){
	using namespace std;

	int cookies[ArSize] = {1, 2, 4, 8, 16, 32, 64, 128};
	int sum = sum_arr(cookies, ArSize);

	cout << "Total cookies eaten: " << sum << "\n";

	return 0;
}


int sum_arr(int arr[], int n){
	int total = 0;
	for (int i = 0; i <n; i++)
		total += arr[i];
	return total;
}